See also the reading list below.
"Darasuum Kote... Vode An" — interview with Karen Traviss by Sequential Tart (reveals some details about cultural inspiration and about the source material the author was given to work from): http://www.sequentialtart.com/article.php?id=207
"The Mandalorians: People and Culture" and "No Word for Hero: The Mandalorian Language" from Star Wars Insider #86 (various formats; by Republic Commando author Karen Traviss): https://project-shereshoy.tumblr.com/post/694954333385670656/transcript-gdocs-text-jpeg-files-pdf
"Inside Mando'a Culture and Language" (background article originally available online; by Republic Commando author Karen Traviss): https://project-shereshoy.tumblr.com/post/695204449221853184/inside-mandoa-culture-and-language
"Celts and Mandos: a real case study" by Karen Traviss: https://web.archive.org/web/20060706125546/http://blogs.starwars.com/karentraviss/106
Mandalorians were not based on Spartans, per Karen Travis in a post timestamped "Dec 15, 2005 06:17 PM" on this page:
https://web.archive.org/web/20070825000605/http://forums.starwars.com/thread.jspa?threadID=237751&start=450
"Did you base the Mandalorians on the Spartans?" by Karen Traviss:
https://web.archive.org/web/20150907203055/http://www.karentraviss.com/page22/files/Did_you_base_the_Mandalorians_o.html
Posts from Karen Traviss from forums.starwars.com, blogs.starwars.com, boards.theforce.net, and more, plus links to interviews; over 180 pages and 68000 words:
https://docs.google.com/document/d/1WdYGtUIkt0fJRC16CldO11F3slO1JO_xc0iZhnyUKpo/
Mandalore's Helmet (Mand'alor Canderous Ordo discusses Mandalorians in the KOTOR2 video game): https://www.youtube.com/watch?v=TFb5i_IZ52w
Text of a conversation with Mandalore Canderous Ordo in Star Wars Knights of the Old Republic II: The Sith Lords (be sure to expand all dialogue trees):
https://strategywiki.org/wiki/Star_Wars_Knights_of_the_Old_Republic_II:_The_Sith_Lords/Mandalore
Text of Mando Romances from the Star Wars: The Old Republic (SWTOR) video game. Useful for seeing a couple of viewpoints of fictional Mandalorians. The Mando’a pronunciation and grammar ranges from terrible to great.
Video of many Torian Cadera conversations: https://www.youtube.com/watch?v=ivBhB09GVnE
Text of Torian Cadera romance: https://torcommunity.com/database/npc/SqOKZq2/torian+cadera/
Video of many Akaavi Spar conversations: https://www.youtube.com/watch?v=wLf1IQlCJA8
Text: https://torcommunity.com/database/mission/NCysmx2/welcome+akaavi+spar/
Mandalorian Old Republic Lore Entries from the Star Wars: The Old Republic (SWTOR) video game. https://swtorista.com/articles/mandalorian-old-republic-codex-lore-entries/
Since all of this is filtered through one person's opinion, do not take any of it as the definitive word on Mandalorian culture, but as one perspective on it.
The Complete History of the Mandalorians (combines Canon and Legends material): https://www.youtube.com/watch?v=Uf8mpHIXZas
Script for the above video: https://docs.google.com/document/d/1qmU72Hiq9p3RlRda_JgWnTXdh8HW5Vradt2EY622810/
Mandalorian Documentary | 24,000 Years of Honor (combines Canon and Legends material): https://www.youtube.com/watch?v=awoqOq-n6CQ
The Battle for Mandalore - The most obscure piece of lore on Mandos (speculation based on material from various sources): https://www.youtube.com/watch?v=kb7YYkI-J7g
Mandalorian armor suitup + lore tidbits: https://www.youtube.com/watch?v=ZyAXURSDusY
The Mandalorian Culture *Legends* | Manda-LORE: https://www.youtube.com/watch?v=GPogIhSHgS8
What Was Mandalore Like In The Expanded Universe? | Manda-LORE: https://www.youtube.com/watch?v=AQAw-ili6n4
A fan mashup of dialogue from *Star Wars: The Old Republic* glorifying the bloody history of Mandlorians: https://www.youtube.com/watch?v=7dj3tytCI24
Wookieepedia Canon lore: https://starwars.fandom.com/wiki/Mandalorian
Wookieepedia Legends lore: https://starwars.fandom.com/wiki/Mandalorian/Legends
Wikipedia article about Mandalorians in all media: https://en.wikipedia.org/wiki/Mandalorians
Mandalorians in the Movies (Tumblr post by Project Shereshoy)
How the portrayal of Mandalorians have changed over time in the Star Wars media: https://www.quora.com/How-have-Mandalorians-been-portrayed-in-Star-Wars-How-has-this-portrayal-changed-over-time/answer/Eric-Lowe-6
Vodcast 2: Culture and Language: https://www.youtube.com/watch?v=S3ULcx0ZPGU
Mando'a for Di'kute podcast (learn Mando'a vocabulary and trivia about Mandalorian culture and lore, both in-universe and on Earth):
https://open.spotify.com/show/1C7ESwuwEklW2uLSLjn7zY
https://www.youtube.com/playlist?list=PL5PFZvgWhOKyXQB4Atgl6UzN33Z_p1Wxg
"Documenting Boba Fett's official appearances and references" (video clips); not about in-universe Mandalorians per se, instead focused on the character on which the Mandalorians were based: https://www.bobafettfanclub.com/multimedia/video/
Quotes from Order 66 related to the act of cin vhetin: https://sites.google.com/view/hibirarmandoa/bajur/mando-droten/cin-vhetin
Notes about holidays, memorials, and celebrations of in-universe Mandalorians: https://sites.google.com/view/hibirarmandoa/bajur/mando-droten/holidays
Notes about myths and key cultural concepts that appear in the source material: https://sites.google.com/view/hibirarmandoa/pirimmur/myths
Notes about funerary practices, including physical memorials to the dead: https://sites.google.com/view/hibirarmandoa/bajur/mando-droten/funerary-practices
Notes about marriage, including some fan theories:
https://sites.google.com/view/hibirarmandoa/bajur/mando-droten/marriage
Overview in French of the Mandalorian people and culture (primarily Legends material): https://swtor-rp.webrpg.info/t2410-Culture-Les-Mandaloriens.htm
"Groß machen Kriege niemanden: Mandalorianer im Wandel der Zeit" ("Wars don't make anyone great: Mandalorians through the ages"); information bridges Legends and Disney canon:
https://www.jedipedia.net/wiki/Jedipedia:OSWM_104
"Keine Mandalorianerin wie jede andere: Mandalorianer im Wandel der Zeit — Teil 2" ("No Mandalorian like any other: Mandalorians through the ages — Part 2"); information bridges Legends and Disney canon:
https://www.jedipedia.net/wiki/Jedipedia:OSWM_106
Overview in German of the Mandalorian people and culture (a mix of Legends and Disney canon): https://www.jedipedia.net/wiki/Mandalorianer
A fan mashup and reinterpretation of Legends and Canon details about the Resol'nare; good for an overview, but not as a primary source: https://www.tumblr.com/ladyzirkonia/716303392166887424/mandalorian-tenets-or-the-six-actions
Quotes from the source material about the Resol'nare: https://sites.google.com/view/hibirarmandoa/bajur/mando-droten/resolnare
The rhyme presented in various ways, all without commentary.
Resol'nare as a song: https://www.tumblr.com/it-is-no-desert/651646123874844672/a-little-melody-i-made-up-for-the-resolnare-was
The Six Actions in Mando'a and their English meanings: https://www.tiktok.com/@tedofalltrades/video/7228732656601533739
Soundclip of Akaavi Spar from the Star Wars: The Old Republic (SWTOR) video game: https://bokatan77.tumblr.com/post/106745117446/i-adhere-to-the-resolnare-the-core-of-what-it/amp
Soundclip of Torian Cadera from the Star Wars: The Old Republic (SWTOR) video game: https://www.youtube.com/watch?v=otwZ0EPabtE
Different people have different ideas about how to live the Mandalorian culture on Earth. This is a small selection of various ideas.
Vodcast 4: Oya'cye sa Mando'ad: Resol'nare (in Mando'a and English): https://www.youtube.com/watch?v=_3eD__lpLZI
Sur'gaane par Resol'nare (Pictures for the Six Actions): https://www.youtube.com/watch?v=MKuolbvcECM
The Resol'nare Children's Rhyme - Mandalorian Culture: https://www.youtube.com/watch?v=hltq5ReGWdo
How to be Mandalorian in Real Life: https://www.youtube.com/watch?v=LsSDeJ-kG_k
Blog about Mando realism: https://mandorealism.tumblr.com/
Link to a document about one Earth Mando clan's ideals: https://www.facebook.com/AliitbuirKyramgalaarSolusvhoyad/posts/pfbid0i3oGAQUgyyqkhWZMRwhV8Rdf7rowYPfmgePXPNDnN668TxwTzocCJy5AZUcqta4l
Brief thoughts on applying the Resol'nare to real life: https://www.reddit.com/r/mandojoha/comments/5y0gtw/resolnare_a_discussion/
Early discussion on Mando realism on the mandoa.org site: https://forums.mandoa.org/viewforum.php?f=28&sid=567121013f3acc5defa2f85b8b441be1
Mando realism servers with channels devoted to essays and resources about the culture on Earth:
Oyu'baat (look for the Resources category, especially the culture-and-lore resources channel): https://discord.gg/CPhU2YnvcU
Project Shereshoy Archive (look for the Resol'nare category): https://discord.gg/mAmXpWtnPz
Information from the source material and fan theories about Mandalorian cooking: https://sites.google.com/view/hibirarmandoa/bajur/mando-droten/food-discussion
Words and phrases related to food from the base Mando'a dictionary: https://sites.google.com/view/hibirarmandoa/pirimmur/food
Links to several Mando-themed recipes: https://sites.google.com/view/kihgehatike/kai
Notes and links to reference images for art (writing, music, and visual arts) on Earth and in-universe and a list of armor-color meanings from the novels: https://sites.google.com/view/hibirarmandoa/bajur/mando-droten/art
An fan interpretation of the game cu'bikad using a circular board: https://swse.fandom.com/wiki/Cu%27bikad
A fan interpretation of the game cu'bikad using a square board, including discussion of sources: https://www.youtube.com/watch?v=4uKKnrzcLeU
Overview on Wookieepedia of meshgeroya (also called limmie or bolo-ball), including teams, famous players, and references in the source material: https://starwars.fandom.com/wiki/Limmie/Legends
Roleplaying site’s proposed rules for meshgeroya: http://holocron.swcombine.com/wiki/Boloball
Recitation of "Buy'ce gal, buy'ce tal": https://soundcloud.com/shadowsouln7/mandalorian-drinking-song
Sung version of "Buy'ce gal, buy'ce tal": https://soundcloud.com/fraser-anna/buyce-gal-buyce-tal-mandoa
"Vode An" (Mandalorian version): https://www.youtube.com/watch?v=BR_1VtQdF34
"Vode An" (Mandalorian version): https://www.youtube.com/watch?v=VjrHY9Ikd10
"Dha Werda Verda": https://www.youtube.com/watch?v=VjrHY9Ikd10
"Aliit Ori'shya Taldin": https://www.youtube.com/watch?v=p_KrBdIl2sw
"Vode An" (on 16" bes'bev): https://www.youtube.com/watch?v=yah1G6JkvjQ
Additional information can be found in comics (including Jango Fett: Open Seasons, Knights of the Old Republic Omnibus 1-3, Tales of The Jedi: The Sith War, Marvel Star Wars #68-69, Star Wars Legacy #41, and a few others), but those are expensive to acquire in physical form, but might be available on Kindle. The
Republic Commando novels (a series written by Karen Traviss; now considered EU/Legends, but those who follow Mando realism draw inspiration from these works)
Hard Contact (2004)
Fan-created audio drama (complete): https://www.youtube.com/playlist?list=PLnvLVKk_HoWtiF9bBF7A0WYWHpqSYo2bf
Fan-created audiobook with Republic Commando playthrough in the background (in process): https://www.youtube.com/playlist?list=PLeD3zNpJY9zj-vwhKOH6WgO5VYZ4sip9v
Fan-created animated series playlist (based on the book; sections come out once every few years; Legends material): https://www.youtube.com/playlist?list=PLZPQD_qkaADyuHqUlrL8u8y4PIjnAPJZl
Triple Zero (2006)
Fan-created audio drama (in process): https://www.youtube.com/playlist?list=PLnvLVKk_HoWs64egi9ePuDem0knjr87Vh
True Colors (2007)
Order 66 (2008)
501st (2009)
Other Mandalorian-related material by Karen Traviss
Mandalorians: People and Culture and No Word for Hero: The Mandalorian Language (article in Star Wars Insider 86, 2006); also available: https://archive.org/details/7_20220909_20220909/page/n9/mode/2up
Inside Mando'a Culture and Language (once hosted on official online forums); also available: https://archive.org/details/sw-insider-86-online-supp-mando-a-culture-and-language
Boba Fett: A Practical Man (Traviss, 2006)
Legacy of the Force: Bloodlines (Traviss, 2006)
Legacy of the Force: Sacrifice (Traviss, 2007)
Legacy of the Force: Revelation (Traviss, 2009)
First appearances of Mandalorians, 1977 (Marvel Comics)
Star Wars (1977) 68
Star Wars (1977) 69
Star Wars (1977) 101
Star Wars (1977) 99
Star Wars (1977) 100
Star Wars (1977) 107
Other appearances of Mandalorians, not by Karen Traviss
"The History of the Mandalorians" from Star Wars Insider #80 (JPG only; written shortly before the Republic Commandos books came out): https://mandowords.tumblr.com/post/170798491626/the-history-of-the-mandalorians-star-wars
Luke Skywalker and the Shadows of Mindor (novel, Matthew Stover, 2008)
Jango Fett: Open Seasons (comic series, Haden Blackman, 2002)
Jango Fett: Open Seasons audio comic, issue 1 (Mando'a with English subtitles; Legends material): https://www.youtube.com/watch?v=8Rb8Jx1aO0U
Knights of the Old Republic Omnibus 1-3 (compiling the comic series that ran from 2006-2012, set during the Neo-Crusader era and well before the Republic Commando series)
Tales of The Jedi: The Sith War (comic series, 1995-1996, set well after the the Republic Commando series and likely based on the Marvel Comics Mandalorians)
Star Wars Legacy #41 (comic, John Ostrander, 2009)
For those interested in significant current Canon references to the Mandalorian people and their culture. The Bounty Hunter Code: From the Files of Boba Fett book attempts to bridge some ideas from the Legends/Extended Universe with what appeared in The Clone Wars, but some material is later contradicted or called into question by later shows.
The Clone Wars, Season 2, Episodes 12-14
The Clone Wars, Season 3, Episode 6
The Clone Wars, Season 4, Episode 14
The Clone Wars, Season 5, Episodes 14-16
The Clone Wars, Season 7, Episodes 9-12
Rebels, Season 2, Episode 13
Rebels, Season 3, Episode 7
Rebels, Season 3, Episodes 15-16
Rebels, Season 4, Episodes 1-2
Star Wars Forces of Destiny, Season 2, Episode 11
The Mandalorian, Season 1, Episode 3
The Mandalorian, Season 2, Episode 3
The Mandalorian, Season 3
The Book of Boba Fett, Season 1, Episode 5
Additionally, this video provides some background on some of the original design decisions behind the Disney representation of the Mandalorians.
Star Wars The Clone Wars Season Two: Creating Mandalore Featurette: https://www.youtube.com/watch?v=Fs21QP1czZg
Browse the databank for Disney canon information about Mandalorian characters, ships, gear, and places, plus overviews and episode guides. The search feature works best if you know what you’re looking for.
https://www.starwars.com/databank
Examinations by various people of what they discovered about the real-world development of Mando'a.
A History of Mando’a: https://numidianprime.wordpress.com/2022/01/25/a-history-of-mandoa/
History of Mandalorian Language: https://www.youtube.com/watch?v=MZTqCn0BZwM
Inside Mando'a Culture and Language (interview with the original conlang author): https://archive.org/details/sw-insider-86-online-supp-mando-a-culture-and-language
Quotes by the original conlang author from various sources about influences from real-world languages, plus similarities that fans have noticed and a link to an interview with Jesse Harlin: https://sites.google.com/view/hibirarmandoa/bajur/mando-droten/earth-inspiration
Development History: The Mandalorian Alphabet (note that all appearances of the Mando'a scripts in official media use the script as a cipher for English with one exception — a few banners in Star Wars: Tales of the Old Republic have Mando'a in one of the Mando'a scripts): https://forum.mandoa.org/viewtopic.php?t=222 and with pictures: https://project-shereshoy.tumblr.com/post/668753830966657024/development-history-the-mandalorian-alphabet